<template>
<button @click="isShowDemo = !isShowDemo" >切换隐藏和显示</button>
  <Demo v-if="isShowDemo">
     
  </Demo>
</template>

<script>
import {ref} from 'vue'
import Demo from './components/Demo.vue'
export default {
  name: "App",
  components:{Demo},
  setup() {
    let isShowDemo = ref(true)
    return {
      isShowDemo
    }
  }
};
</script>


